Are you sure it wasn't in
the main metal discussion thread? I searched the last page of this thread and "In Flames" is not there. Speaking of...this thread is turning into a metal discussion thread when it's supposed to be about headphones for metal specifically...but I suppose it's unavoidable.
At any rate...some melodic death metal bands I like: Amon Amarth, Arch Enemy, At The Gates, Children Of Bodom, Dark Tranquillity, Dimension Zero, Disarmonia Mundi, Dissection, Gardenian, In Flames, Kalmah, Nightrage, Soilwork (Note that some of them are not just that one style.) "Blinded By Fear" is my recommended At The Gates track.